.bannerLB {
    position: relative;
    text-align: center;
    left: 0;
    top: 0;
    width: 620px;
    height: 300px;
    overflow: hidden;
}

.bannerLB ul {
    position: absolute;
    left: 0;
    top: 0;
    width: 600%;
}

.bannerLB ul li {
    float: left;
    width: 620px;
    height: 300px;
}

.bannerLB ul li img {
    width: 100%;
}

.bannerLB .arrow-l {
    display: none;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 32px;
    background: url(../images/arrow-prev.png) rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.bannerLB .arrow-r {
    display: none;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 32px;
    background: url(../images/arrow-next.png) rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.bannerLB .bannerBall {
    position: absolute;
    bottom: 40px;
    left: 560px;
}

.bannerLB .bannerBall ol {
    padding-left: 50px;
}

.bannerLB .bannerBall ol li {
    float: left;
    list-style: disc;
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 40px;
}

.LB {
    margin: 10px;
}